Read this excerpt from Gallo's talk, and answer the questions below.

"In the next bit, we're going to see a couple [of] squid. . . . Now males, when they fight, if they're really aggressive, they turn white. . . . Now, here's a male on the left and a female on the right, and the male has managed to split his coloration so the female only always sees the kinder gentler squid in him.... Let's take a look at it again. Watch the coloration: white on the right, brown on the left. He takes a step back—so he's keeping off the other males by splitting his body—and comes up on the other side. . . . Bingo! Now I'm told that's not just a squid phenomenon with males, but I don't know." [Laughter]"